Drill-derrick.



No; 767,638. PATENTED AUG. 16, 1904 L-. H.1EMERSON' & s. P. KERSTETTER.

DRILL DERRICK.

APPLICATION. FILED DBO. 28, 1903. I N0 MODEL. I v 2 SHEETS-SHEET 1.

I I 4 :1 V I LEEmerSOW" S.f,' K awveM iiozs No..767,638. I PATBNTED AUG. 16, 1904.

L. H. EMERSON & S. P. KERSTETTER. DRILL DERRICK.

APPLICATION 31mm 11116.28. 1903.. 110 MODEL. 2 aann'rssnnm z.

11E. rlwr-sofi/ van lions 5.,R Kehskr wi tvwooeo UNITED STATES Patented August 16, 1904.

PATENT OEEIcE.

LEWIS H. EMERSON AND SAMUEL PETER KERSTETTER, OF DE YOUNG,

PENNSYLVANIA.

DRILL-DERRICK.

SPECIFICATION forming part of Letters Patent No. 767,638, dated August 16, 1904..

Application filed December 28,1903. Serial No. 186,852. (No modelfi To all whom, it ntcty concern:

Be it known that we, LEwIs H. EMERSON and SAMUEL PETER KERSTETTER, citizens of the United States, residing at De Young, in the county of Elk and State of Pennsylvania, have invented a new and useful Drill-Derrick, of which the following is a specification.

This invention relates to that class of der ricks employed in the drilling of Artesian and oil wells.

In view of the growing scarcity of timber the cost of the ordinary derrick is constantly increasing and is becoming a serious consideration in the sinking of new Wells.

It is the object of the present invention to provide a derrick of the above nature that.

may be constructed of a comparatively small amount of lumber and at the same time is amply strong and durable to withstand the heavy strains and hard usage incident to these structures during their use and from the elements.

The preferred embodiment of the invention is illustrated in the accompanying drawings, Wherein Figure 1 is a side elevation of a derrick constructed in accordance with the invention. Fig. 2 is a top plan view of the base-frame.

, Fig. 3is a vertical sectional View through the lower portion of the structure. Fig. 4 is a side elevation of the top of the mast. Fig. 5 is a sectional view taken on the line 5 5 of Fig. a. Fig. 6 is a sectional view taken on the line 6 6 of Fig. i. Fig. 7 is a sectional.

11 and 12 are provided between their ends with alined seats 13, that receive the main sill, a portion of which is illustrated at 14.

The sill 1 1 is secured to the sills 11 and 12 by oppositely-driven wedges 15, located in the seats on opposite sides of the sill 14. Stringers 15 are located upon the sills 10 and 14 and constitute supports for the floor 16.

The convergently disposed mudsills 10 have alined seats 17 cut in their upper sides to receive a cross-sill 18, which sill is fastened in place by oppositely-driven wedges 19, located inthe seats. The sill 18 constitutes a support for a single standard or mast 20, and to this end said sill is provided with a seat 21, the side walls of which are undercut or dovetailed, as shown in Fig. 3. The lower end of the mast 20 is dovetailed and fitted in one side of the seat, leaving a space in the opposite side. In this space is fitted a key 22, that thus securely fastens the stepped end of the standard in the said seat. The standard 20 can be of any height or material desired and carries at its upper end a crown-pulley 23. The mounting for this pulley consists of a sectional sleeve 2 L, that surrounds the upper end of the mast, the sections thereof being secured together by bolts 25. This sleeve carries upstanding ears 26, to and between which is journaled the pulley 23. The sleeve 24:, furthermore, has eyes 27, in which are attached the upper ends of guy-cables 28, the lower ends of said cables being attached to eyebolts 29, secured in the outer ends of the mudsills '10 and 12. Turnbucklcs may be located in the guys for the purpose of obtaining the desired tension thereon.

In order that the mast or standard 20 may be thoroughly strengthened, truss-braces 31 are secured to the upper and lower portions thereof and extend longitudinally of said mast. The fastening means for the braces are in the form of sectional rings or collars 32, the sections being secured together by bolts 33 and having eyes 3% to receive the ends of the trussbraces. The intermediate portions of said braces are spaced from the intermediate portion of the mast by means of spreader-arms 35, secured, as shown at 36, to the mast and having seats 37 in their outer ends, in which the braces engage. A ladder 38, constructed in any suitable manner, extends from the lower end to the top of the mast, and a deadline hook 38 is secured to the mast, contiguous to its upper end.

In connection with the derrick and forming a part of the same there is employed means for supporting the bull-wheel. This means is constructed as follows: Convergently-disposed brace-beams 39 extend from the outer ends of the mudsills 10 to a cross-bar 40, secured to the mast, and connecting intermediate portions of these beams 39 is a cross-bar 41, this bar having attached thereto the upper ends of braces 4:2, that extend to the floor of the derrick. Bull-wheel posts 43 are attached at their lower ends to the base-frame and have their upper ends fastened to the cross-bar 41. The bull-wheel 4A is journaled to and between the posts.

It will be evident that a derrick constructed substantially in accordance with this invention will use but a small amount of timber, for the reason that a single mast is employed, while the braces and guys can be constructed of cables, wire, or metallic rods. At the same time the structure is very strong and durable and is rigidly supported upon the baseframe, so that it will have a firm and substantial foundation. Moreover, this base-frame is securely fastened in place to withstand the strains brought upon the same by the guys attached thereto.

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described invention will be apparent to those skilled in the art without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a derrick of the class described, the combination with a mast, of a sleeve secured to and surrounding the upper end of the mast and having relatively immovable upstanding ears, a crown-pulley journaled to and between the ears above the mast and having its opposite portions projecting beyond the opposite sides of said mast, and guy-cables attached to the sleeve.

2. In a derrick of the class described, the combination with a mast, of a sleeve surrounding and secured against movement to the upper end of the mast, said sleeve comprising sections secured together, an upstanding ear carried by each section, and a crown-pulley journaled to and between the ears.

3. In a derrick of the class described, the combination with an upright mast, of a sectional sleeve mounted on the upper end of the mast, a crown-pulley journaled on the sleeve above the mast and having its diametrically opposite portions projecting beyond the sides,

of said mast, guy-cables attached to the sleeve, sectional collars secured to the upper and lower portions of the mast, truss-braces connecting the collars, and spreader-arms interposed between the mast and the truss-braces, said spreader-arms having seats in their outer ends that receive said braces.

4. In a derrick of the class described, the combination with an upright mast, of a sectional sleeve mounted on the upper end of the mast and having upstanding ears, a crownpulley journaled to and between the ears, eyes constituting a part of the sleeve, guy-cables attached in the eyes, sectional collars secured to the upper and lower portions of the mast and having eyes, spreader-arms fastened to the mast between the collars, and truss-braces connecting the collars and passing over the outer ends of the spreader-arms.

5. In a derrick of theolass described, the combination with convergently-disposed mudsills, of a Samson-post mudsill located at the convergent ends of said mudsills, a cross-sill located on the convergently-disposed mudsills and having a seat in its upper side, a mast having its lower end stepped in the seat, a key for securing said stepped end in the seat, and guy-cables connecting the upper portion of the mast and the outer ends of the con- Vergently-disposed mudsills.

6. In a derrick of the class described, the combination with divergently-disposed mudsills having their inner ends arranged contiguous to each other, of a main sill located at the contiguous ends of the mudsills, a transversely-disposed Samson-post mudsill, a crosssill supported on the divergently-disposed mudsills, a mast mounted on the cross-sill, and guys connecting the upper end of the mast and the outer ends of the Samson-post and mudsills.

7. In a derrick of the class described, the combination with convergently-disposed mudsills having seats in their upper sides, of a transversely-disposed samson-post mudsill, stringers located above the sills, a floor supported on the stringers, a cross-sill located in the seats of the mudsills, oppositely-disposed wedges securing the cross-sill in said seats, a mast supported on the cross-sill, and guy-cables connecting the upper portion of the mast and the outer ends of the mudsills.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in the presence of two witnesses.

LEWIS H. EMERSON.

SAMUEL PETER KERSTETTER.

W itnesses:

R. WV. CRosBY, JOHN LUBoLD. 

